Abstract: A label for a glass container is preprinted with inks and adhesive on a separable substrate and cured, and the printed label is then transferred to the container. The labelled container is then coated with a protective material. The label application apparatus includes a mechanism for indexing the label web in such a manner as to minimize starting and stopping of the supply and take-up reels when labels are applied to plural containers simultaneously.

Abstract: A computerized bottle checker which detects the reflection or transmission of light from a rotating bottle to be checked for flaws. A bottle is rejected if the light exceeds a predetermined threshold level for a time period falling between a minimum and a maximum time. The threshold level can be automatically determined by testing a standard bottle with a known flaw and setting the threshold level to a constant fraction of the peak level for a complete rotation of the bottle. The minimum and maximum times can be set to constant fractions of the time period for which the light from the standard bottle exceeds the threshold.